word | | Natural hazards |
| hazard | Atlantic Ocean | ... and the Madeira Islands; ships subject to superstructure icing in extreme northern Atlantic from October to May; persistent fog can be a maritime hazard from May to September; hurricanes (May to December |
| hazard | Christmas Island | the narrow fringing reef surrounding the island can be a maritime hazard |
| hazard | French Southern and Antarctic Lands | ... Paul are inactive volcanoes; Iles Eparses subject to periodic cyclones; Bassas da India is a maritime hazard since it is under water for a period of three hours prior to and following ... |
| hazard | Indian Ocean | occasional icebergs pose navigational hazard in southern reaches |
| hazard | Pacific Ocean | ... Hemisphere and the western Pacific; ships subject to superstructure icing in extreme north from October to May; persistent fog in the northern Pacific can be a maritime hazard from June to December |
| hazard | Saint Pierre and Miquelon | persistent fog throughout the year can be a maritime hazard |
| hazard | Spratly Islands | typhoons; numerous reefs and shoals pose a serious maritime hazard |
| hazard | United States Pacific Island Wildlife Refuges | ... Baker, Howland, and Jarvis Islands: the narrow fringing reef surrounding the island can be a maritime hazard Kingman Reef: wet or awash most of the time, maximum elevation of less than 2 ... |
| hazards | Ashmore and Cartier Islands | surrounded by shoals and reefs that can pose maritime hazards |
| hazards | Mauritius | cyclones (November to April); almost completely surrounded by reefs that may pose maritime hazards |
| haze | Guinea | hot, dry, dusty harmattan haze may reduce visibility during dry season |
| haze | Guinea-Bissau | hot, dry, dusty harmattan haze may reduce visibility during dry season; brush fires |
| haze | Mali | hot, dust-laden harmattan haze common during dry seasons; recurring droughts; occasional Niger River flooding |
| haze | Qatar | haze, dust storms, sandstorms common |